n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 272: | \[272!!!!!-1\] | 3361 × 19013 × 89317 × 51055784371063<14> × 491331040037034824869931085064793227923039896996089545654554483157926303216749118689<84> |